Question about 1999 GMC Suburban

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1999 GMC suburban and just out of the blue the transmission started to make a grinding noise mind you this is a 4wd unit it still will go but acts like it stuck in low gear and no reverse I tried different ways by putting it in four wheel drive low and high didn't make any difference any Idea's what could have happen,

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The sun-shell in the transmission has cracked if you do not have reverse, and are in a low gear range with no overdrive. As for the grinding, that is the remnants of the sun-shell.

Posted on Mar 24, 2011

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www.limotec.co.uk
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